Fix 'Unused local variable' hints in analyzer and analysis_server.

pkg/analysis_server/lib/src/domain_execution.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library domain.execution;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 159 matching lines @@
   }
 
   /**
    * Return `true` if the given [filePath] represents a file that is in an
    * analysis root.
    */
   bool _isInAnalysisRoot(String filePath)
       => server.contextDirectoryManager.isInAnalysisRoot(filePath);
 
   void _reportCurrentFileStatus() {
-    Map<String, List<String>> dartToHtml = new HashMap<String, List<String>>();
-    Map<String, List<String>> htmlToDart = new HashMap<String, List<String>>();
     for (AnalysisContext context in server.getAnalysisContexts()) {
       List<Source> librarySources = context.librarySources;
       List<Source> clientSources = context.launchableClientLibrarySources;
       List<Source> serverSources = context.launchableServerLibrarySources;
       for (Source source in clientSources) {
         if (serverSources.remove(source)) {
           _sendKindNotification(source.fullName, ExecutableKind.EITHER);
         } else {
           _sendKindNotification(source.fullName, ExecutableKind.CLIENT);
         }
@@ skipping 27 matching lines @@
     if (_isInAnalysisRoot(filePath)) {
       server.sendNotification(
           new ExecutionLaunchDataParams(filePath, kind: kind).toNotification());
     }
   }
 
   static List<String> _getFullNames(List<Source> sources) {
     return sources.map((Source source) => source.fullName).toList();
   }
 }